(Las Vegas, NV) — Sports bettors have helped online gambling sites gain visitors. An Internet measurement service says during September, online gaming sites chalked up 9.7-million visitors. That’s far less than the 82-million people who went onto education sites or the 35-million people who visited political sites last month, but gaming’s 13% increase topped them both. PokerStars was the most-visited gaming site, followed by UpickEm.net and FullTiltPoker.